@babel/eslint-parser/lib/analyze-scope.js

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = analyzeScope;

var _core = require("@babel/core");

var _eslintScope = _interopRequireDefault(require("eslint-scope"));

var _definition = require("eslint-scope/lib/definition");

var _patternVisitor = _interopRequireDefault(require("eslint-scope/lib/pattern-visitor"));

var _referencer = _interopRequireDefault(require("eslint-scope/lib/referencer"));

var _eslintVisitorKeys = require("eslint-visitor-keys");

var _visitorKeys = _interopRequireDefault(require("./visitor-keys"));

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

const flowFlippedAliasKeys = _core.types.FLIPPED_ALIAS_KEYS.Flow.concat(["ArrayPattern", "ClassDeclaration", "ClassExpression", "FunctionDeclaration", "FunctionExpression", "Identifier", "ObjectPattern", "RestElement"]);

const visitorKeysMap = Object.entries(_core.types.VISITOR_KEYS).reduce((acc, [key, value]) => {
  if (!flowFlippedAliasKeys.includes(value)) {
    acc[key] = value;
  }

  return acc;
}, {});
const propertyTypes = {
  callProperties: {
    type: "loop",
    values: ["value"]
  },
  indexers: {
    type: "loop",
    values: ["key", "value"]
  },
  properties: {
    type: "loop",
    values: ["argument", "value"]
  },
  types: {
    type: "loop"
  },
  params: {
    type: "loop"
  },
  argument: {
    type: "single"
  },
  elementType: {
    type: "single"
  },
  qualification: {
    type: "single"
  },
  rest: {
    type: "single"
  },
  returnType: {
    type: "single"
  },
  typeAnnotation: {
    type: "typeAnnotation"
  },
  typeParameters: {
    type: "typeParameters"
  },
  id: {
    type: "id"
  }
};

class PatternVisitor extends _patternVisitor.default {
  ArrayPattern(node) {
    node.elements.forEach(this.visit, this);
  }

  ObjectPattern(node) {
    node.properties.forEach(this.visit, this);
  }

}

class Referencer extends _referencer.default {
  visitPattern(node, options, callback) {
    if (!node) {
      return;
    }

    this._checkIdentifierOrVisit(node.typeAnnotation);

    if (_core.types.isAssignmentPattern(node)) {
      this._checkIdentifierOrVisit(node.left.typeAnnotation);
    }

    if (typeof options === "function") {
      callback = options;
      options = {
        processRightHandNodes: false
      };
    }

    const visitor = new PatternVisitor(this.options, node, callback);
    visitor.visit(node);

    if (options.processRightHandNodes) {
      visitor.rightHandNodes.forEach(this.visit, this);
    }
  }

  visitClass(node) {
    this._visitArray(node.decorators);

    const typeParamScope = this._nestTypeParamScope(node);

    this._visitTypeAnnotation(node.implements);

    this._visitTypeAnnotation(node.superTypeParameters && node.superTypeParameters.params);

    super.visitClass(node);

    if (typeParamScope) {
      this.close(node);
    }
  }

  visitFunction(node) {
    const typeParamScope = this._nestTypeParamScope(node);

    this._checkIdentifierOrVisit(node.returnType);

    super.visitFunction(node);

    if (typeParamScope) {
      this.close(node);
    }
  }

  visitProperty(node) {
    var _node$value;

    if (((_node$value = node.value) == null ? void 0 : _node$value.type) === "TypeCastExpression") {
      this._visitTypeAnnotation(node.value);
    }

    this._visitArray(node.decorators);

    super.visitProperty(node);
  }

  InterfaceDeclaration(node) {
    this._createScopeVariable(node, node.id);

    const typeParamScope = this._nestTypeParamScope(node);

    this._visitArray(node.extends);

    this.visit(node.body);

    if (typeParamScope) {
      this.close(node);
    }
  }

  TypeAlias(node) {
    this._createScopeVariable(node, node.id);

    const typeParamScope = this._nestTypeParamScope(node);

    this.visit(node.right);

    if (typeParamScope) {
      this.close(node);
    }
  }

  ClassProperty(node) {
    this._visitClassProperty(node);
  }

  ClassPrivateProperty(node) {
    this._visitClassProperty(node);
  }

  ClassPrivateMethod(node) {
    super.MethodDefinition(node);
  }

  DeclareModule(node) {
    this._visitDeclareX(node);
  }

  DeclareFunction(node) {
    this._visitDeclareX(node);
  }

  DeclareVariable(node) {
    this._visitDeclareX(node);
  }

  DeclareClass(node) {
    this._visitDeclareX(node);
  }

  OptionalMemberExpression(node) {
    super.MemberExpression(node);
  }

  _visitClassProperty(node) {
    this._visitTypeAnnotation(node.typeAnnotation);

    this.visitProperty(node);
  }

  _visitDeclareX(node) {
    if (node.id) {
      this._createScopeVariable(node, node.id);
    }

    const typeParamScope = this._nestTypeParamScope(node);

    if (typeParamScope) {
      this.close(node);
    }
  }

  _createScopeVariable(node, name) {
    this.currentScope().variableScope.__define(name, new _definition.Definition("Variable", name, node, null, null, null));
  }

  _nestTypeParamScope(node) {
    if (!node.typeParameters) {
      return null;
    }

    const parentScope = this.scopeManager.__currentScope;
    const scope = new _eslintScope.default.Scope(this.scopeManager, "type-parameters", parentScope, node, false);

    this.scopeManager.__nestScope(scope);

    for (let j = 0; j < node.typeParameters.params.length; j++) {
      const name = node.typeParameters.params[j];

      scope.__define(name, new _definition.Definition("TypeParameter", name, name));

      if (name.typeAnnotation) {
        this._checkIdentifierOrVisit(name);
      }
    }

    scope.__define = function () {
      return parentScope.__define.apply(parentScope, arguments);
    };

    return scope;
  }

  _visitTypeAnnotation(node) {
    if (!node) {
      return;
    }

    if (Array.isArray(node)) {
      node.forEach(this._visitTypeAnnotation, this);
      return;
    }

    const visitorValues = visitorKeysMap[node.type];

    if (!visitorValues) {
      return;
    }

    for (let i = 0; i < visitorValues.length; i++) {
      const visitorValue = visitorValues[i];
      const propertyType = propertyTypes[visitorValue];
      const nodeProperty = node[visitorValue];

      if (propertyType == null || nodeProperty == null) {
        continue;
      }

      if (propertyType.type === "loop") {
        for (let j = 0; j < nodeProperty.length; j++) {
          if (Array.isArray(propertyType.values)) {
            for (let k = 0; k < propertyType.values.length; k++) {
              const loopPropertyNode = nodeProperty[j][propertyType.values[k]];

              if (loopPropertyNode) {
                this._checkIdentifierOrVisit(loopPropertyNode);
              }
            }
          } else {
            this._checkIdentifierOrVisit(nodeProperty[j]);
          }
        }
      } else if (propertyType.type === "single") {
        this._checkIdentifierOrVisit(nodeProperty);
      } else if (propertyType.type === "typeAnnotation") {
        this._visitTypeAnnotation(node.typeAnnotation);
      } else if (propertyType.type === "typeParameters") {
        for (let l = 0; l < node.typeParameters.params.length; l++) {
          this._checkIdentifierOrVisit(node.typeParameters.params[l]);
        }
      } else if (propertyType.type === "id") {
        if (node.id.type === "Identifier") {
          this._checkIdentifierOrVisit(node.id);
        } else {
          this._visitTypeAnnotation(node.id);
        }
      }
    }
  }

  _checkIdentifierOrVisit(node) {
    if (node == null ? void 0 : node.typeAnnotation) {
      this._visitTypeAnnotation(node.typeAnnotation);
    } else if ((node == null ? void 0 : node.type) === "Identifier") {
      this.visit(node);
    } else {
      this._visitTypeAnnotation(node);
    }
  }

  _visitArray(nodeList) {
    if (nodeList) {
      for (const node of nodeList) {
        this.visit(node);
      }
    }
  }

}

function analyzeScope(ast, parserOptions) {
  const options = {
    ignoreEval: true,
    optimistic: false,
    directive: false,
    nodejsScope: ast.sourceType === "script" && (parserOptions.ecmaFeatures && parserOptions.ecmaFeatures.globalReturn) === true,
    impliedStrict: false,
    sourceType: ast.sourceType,
    ecmaVersion: parserOptions.ecmaVersion,
    fallback: _eslintVisitorKeys.getKeys
  };
  options.childVisitorKeys = _visitorKeys.default;
  const scopeManager = new _eslintScope.default.ScopeManager(options);
  const referencer = new Referencer(options, scopeManager);
  referencer.visit(ast);
  return scopeManager;
}